Sarcoma leg
Publication Date: 2015-06-22
Details
Service Anatomy
Modality: Radiographs
Species: Canine
Area: Head
History
Labrador retriever 8yo History of lameness since Oct 2014, also had xrays at rdvm which showed a broken tibia with tumor. Has not had surgery or anything. The patient was too painful to acquire the orthogonal radiograph.
1 image
Findings
Left stifle: there is a large amount of soft tissue swelling centered on the cranial and caudal proximal aspect of the tibia. There is diffuse permeative lysis of the tibia on all its length. This is associated with a large amount of irregular periosteal reaction and dystrophic mineralization of the soft tissues. There is also moderate periosteal proliferation surrounding the fibula. At the level of the mid-diaphysis of the tibia there a radiolucent linear area consistent with the history of of pathologic fracture. There is also poor alignment of the diaphysis of the fibula on the lateromedial projection. The femur and Tarsus are considered to be within normal limits. There is no evidence of an aggressive osteolytic process at these levels. There is a mild amount of DJD within the stifle.
Impression: 1. Severely aggressive osteolytic and osteoproliferative lesion affecting the all length of the left tibia with associated soft tissue swelling. Primary consideration is given to a neoplastic process such as osteosarcoma and previous pathologic fracture. A less likely fungal condition cannot be completely excluded but is believed to be less likely.
Diagnosis
Pathology Report
Marked necrosis, severe purulent inflammation, evidence of chronic hemorrhage and a few accumulations of large spindle cells. The spindle cells in this sample may suggest a sarcoma, but a definitive diagnosis is not possible because of the severe inflammation and the degree of bone lysis and proliferation, which will almost certainly result in a large amount of reactive bone regardless of the underlying diagnosis.
Notes
Files